论文标题
用于连续变量量子键分布的修改实用的同源探测器模型：相敏放大器的详细安全性分析和改进
A modified practical homodyne detector model for continuous-variable quantum key distribution: detailed security analysis and improvement by the phase-sensitive amplifier
论文作者
论文摘要
连续变量量子密钥分布的实用同源探测器模型模型实用的同伴检测器的固有缺陷，即有限的检测效率和电子噪声，成为可信赖的损失。但是，只有在校准实际同伴检测器的两种缺陷时，常规实用的同伴检测器模型才有效。在本文中，我们展示了一个修改的实用同源探测器模型，该模型可以分别对缺陷进行建模。进一步应用相敏放大器来补偿实际同伴检测器的缺陷。证明了具有相敏放大器的修改实用同源探测器模型的可行性，并详细提供了安全分析。仿真结果表明，相敏化放大器可用于改善改进的实用同源探测器模型的性能，并且当增益无限高时，可以完全补偿有限的检测效率。
The practical homodyne detector model of continuous-variable quantum key distribution models the inherent imperfections of the practical homodyne detector, namely the limited detection efficiency and the electronic noise, into trusted loss. However, the conventional practical homodyne detector model is valid only when both the imperfections of the practical homodyne detector are calibrated. In this paper, we show a modified practical homodyne detector model that can model the imperfections separately. The phase-sensitive amplifier is further applied to compensate the imperfections of the practical homodyne detector. The feasibility of the modified practical homodyne detector model with the phase-sensitive amplifier is proved and the security analysis is provided in detail. Simulation results reveal that the phase-sensitive amplifier can be used to improve the performance of the modified practical homodyne detector model, and when the gain is infinitely high, the limited detection efficiency can be fully compensated.
